Thomas Cullen Davis, or T. Cullen Davis, was born in 1933, the heir to an oil fortune. His father founded Kendavis Industries International, Inc., which at the time of the senior Davis's death in 1968 was worth approximately $800 million.

According to Wikipedia, Davis had a reputation in Dallas society circles for displays of bad temper. In 1976, he was accused of murdering his step-daughter and wife's boyfriend. At the time of the trial, he was the wealthiest man to have stood trial for murder in the United States.

In 1978, Davis was arrested again, this time for allegedly hiring a hitman to murder Priscilla Davis, as well as the judge overseeing their ongoing divorce litigation.

According to truTV, Davis lost most of his oil fortune in the recession of the 1980s, and eventually declared bankruptcy.

T. Cullen Davis formed several important collections of United States stamps, including Postmasters' Provisionals (Siegel sale 278 of November 1964)